Merge remote-tracking branch 'upstream/development' into development

Merging 3.0d to 2.8.4.8

RELEASENOTES.md

@@ -1,3 +1,9 @@
+Version 2.8.4.8 – Development Version
+----
+**Enhancements**
+* Add a new metadata item `clip` (for `CL`ient `IP`). This item is a string comprising the IP number of the "client", and is sent when a play session is starting. The "client" is the sender of the audio stream, e.g. iTunes on a Mac, or the Music player in iOS.
+* When synchronisation has been disabled on the ALSA device (you should only do this for testing), Shairport Sync now refrains from asking for buffer length information from the device.
+
 Version 2.8.4.7 – Development Version
 ----
 Pesky Changes You Cannot Ignore

audio_alsa.c

@@ -417,6 +417,10 @@ int open_alsa_device(void) {
   // snd_pcm_uframes_t frames = 441 * 10;
   snd_pcm_uframes_t buffer_size, actual_buffer_length;
   snd_pcm_access_t access;
+  
+  // ensure no calls are made to the alsa device enquiring about the buffer length if synchronisation is disabled.
+  if (config.no_sync!=0)
+  	audio_alsa.delay = NULL;
 
   // ensure no calls are made to the alsa device enquiring about the buffer length if
   // synchronisation is disabled.